What question did this study set out to answer?

To assess crystal structure transitions and evaluate the relationship between piezoelectric and pyroelectric properties in polyvinylidene-fluoride films following corona poling.

December 1, 1978Journal of Physics D Applied Physics

Piezo- and pyroelectric behaviour of corona-charged polyvinylidene fluoride

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Authors

DDD.K. Das-GuptaNational Institute of Technology Agartala KDK. DoughtyBayer (Germany)

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Implication

Experimental study reveals structural phase transitions in corona-charged polyvinylidene-fluoride films, suggesting a shared physical origin for their piezoelectric and pyroelectric responses.

Key Points

To assess crystal structure transitions and evaluate the relationship between piezoelectric and pyroelectric properties in polyvinylidene-fluoride films following corona poling.
Poled 25 μm thick biaxially stretched polyvinylidene-fluoride (PVF2) films using corona discharges at surface potentials of 5 kV and 10 kV.
Characterized structural phase transitions using X-ray diffraction techniques.
Measured and compared the temperature dependence of the reversible pyroelectric coefficient (p) and the piezoelectric strain coefficient (d31).
Corona poling induced structural phase transformations from the non-polar Form 2 crystal phase to the polar Form 1 phase through an intermediate polar Form 2 phase.
The reversible pyroelectric coefficient and the piezoelectric strain coefficient displayed consistent and correlated behavioral trends across varying temperatures, indicating a shared physical origin.

Cite This Study

Das-Gupta et al. (1978) studied this question.

synapsesocial.com/papers/6a713de231a3df82432972eb https://doi.org/10.1088/0022-3727/11/17/014

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Implication

Experimental study reveals structural phase transitions in corona-charged polyvinylidene-fluoride films, suggesting a shared physical origin for their piezoelectric and pyroelectric responses.

Piezo- and pyroelectric behaviour of corona-charged polyvinylidene fluoride

Discussion

Member takes

Implication

Key Points

Cite This Study

Piezo- and pyroelectric behaviour of corona-charged polyvinylidene fluoride

Discussion

Member takes

Implication

Key Points

Cite This Study

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